【摘要】 本文分析了国际空间站AMS存储系统中一些恶劣的空间环境对随机存储器RAM电路的影响,它可能改变半导体记忆器件的逻辑状态,导致存储单元在逻辑“0”与“1”之间发生翻转等问题。本文采用了基于纠错编码基本原理的BCH(15,7)算法,该算法能够有效解决两位随机错误的纠正问题。本文采用错误图样查找的译码方法,用Verilog DHL来设计BCH(15,7)码的编码与解码,并下载到FPGA芯片上,通过仿真和实践都证明了这种方案的正确性和可行性。更多还原

【Abstract】 The influence of some bad space environment on RAM circuit in AMS storage system of international space station is analyzed in this paper.The error codes can impact the logic states of some semiconductor memory apparatus,make storage units turn between 0 and 1,etc.The algorithm BCH(15,7) based on the principle of error correcting coding can solve the problems of two random errors effectively.This paper adopts the error searching method to decode, and makes the use of Verilog DHL to design the code of BCH(15,7) which is also programmed down to the FPGA chip.This scheme is proved to be feasible and effective by the emulator and practice.更多还原